I implemented the transparency in OpenGL (all triangles in my figure are semitransparent)using the depth sorting, but I have to rebuild the bsp tree after each rotation and I draw them with
It's very slow. 40 times drop in speed comparing to the version where I used no transparency. I tried to make each time the array to use glVertexPointer, glDrawArrays and other stuff,but it became even slower.
Please could you tell me how to increase the speed of rendering.
Thank you in advance.